Sadie will do that at night when I'm ready to go o bed. I get ready to let them out for one last potty break and Sadie will be laying on the living room floor and won't get up, I try nudging her like you did with Dozer and she won't budge. I know she does it on purpose, she eventually gets up and goes out but she has to go when she is ready and only when she is ready. I have tried just leaving her there and just going to bed but then she will decided to get up and want out just as I'm falling asleep and I have to get back up and let her out. Everything has to be on their terms, after all we are their slaves